// ============================================================================
//
// Copyright (C) 2006-2007 Dengues
//
// Google Group: http://groups.google.com/group/dengues
// QQ Group: 24885404
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ============================================================================
package org.dengues.designer.ui.properties.cmd;

import org.dengues.core.metadata.MetadataTable;
import org.dengues.core.process.CompElement;
import org.dengues.designer.ui.i18n.Messages;

/**
 * Qiang.Zhang.Adolf@gmail.com class global comment. Detailled comment <br/>
 * 
 * @since 2007-10-12 下午10:50:17
 */
public class PropertyChangeMetadataCommand extends AbstractPropertyCommand {

    private final MetadataTable table;

    private MetadataTable oldTable;

    /**
     * Qiang.Zhang.Adolf@gmail.com PropertyChangeMetadataCommand constructor comment.
     * 
     * @param table
     * @param compElement
     */
    public PropertyChangeMetadataCommand(CompElement compElement, MetadataTable table) {
        setLabel(Messages.getString("PropertyChangeMetadataCommand.0", compElement.getCompName())); //$NON-NLS-1$
        this.elem = compElement;
        this.table = table;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.dengues.designer.ui.properties.cmd.AbstractPropertyCommand#execute()
     */
    @Override
    public void execute() {
        if (elem.getMetadataList().size() > 0) {
            oldTable = elem.getMetadataList().get(0).clone();
        }
        elem.getMetadataList().clear();
        elem.getMetadataList().add(table);
        refreshPropertyView();
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.dengues.designer.ui.properties.cmd.AbstractPropertyCommand#undo()
     */
    @Override
    public void undo() {
        elem.getMetadataList().clear();
        elem.getMetadataList().add(oldTable);
        refreshPropertyView();
    }

}
